@tanstack/start-server-core (npm)

Known vulnerabilities and malicious package reports for @tanstack/start-server-core on npm, live from OSV, with CISA KEV exploitation status and EPSS scores.

Known package reports

1 malicious package report and 3 vulnerabilities returned by OSV. Check a specific version to see which reports apply.

If you installed a reported malicious release, remove it and rotate the credentials that machine could access. Upgrading does not undo code that already ran.

MAL-2026-3490: Malicious package report

Malicious code in @tanstack/start-server-core (npm)

Published .

Updated .

Reported affected releases: 1.167.36, 1.167.33.

GHSA-g7cv-rxg3-hmpx: Vulnerability

Malware in @tanstack/* packages exfiltrates cloud credentials, GitHub tokens, and SSH keys

Published .

Updated .

Reported affected releases: 1.167.33, 1.167.36.

Affected ranges: introduced 1.167.33, fixed 1.167.37; introduced 1.167.36, fixed 1.167.37.

Fix versions reported by the advisory: 1.167.37.

Severity: CRITICAL.

Known to be exploited (CISA KEV).

CVE-2026-45321

GHSA-qx66-fv34-fjm8: Vulnerability

TanStack Router: Unauthenticated reflected XSS in TanStack Start server-function responses

Published .

Updated .

Affected ranges: introduced 1.143.12, fixed 1.169.39.

Fix versions reported by the advisory: 1.169.39.

Severity: CRITICAL.

CVE-2026-102989

GHSA-9m65-766c-r333: Vulnerability

TanStack Start - Server Core: Inbound server-function request deserialization could invoke a sibling client-referenced server function

Published .

Updated .

Affected ranges: introduced 0, fixed 1.167.30.

Fix versions reported by the advisory: 1.167.30.

Severity: MODERATE.

Source: OSV, including OpenSSF malicious-package reports and GitHub advisories. No known report is not proof a package is safe.